Mystic Retrieval, Runic Repetition, and Notorious Throng

Prerequisites

• Mystic Retrieval in hand
• Runic Repetition in the graveyard
• Notorious Throng in hand
• You control at least one Rogue that cannot be blocked by an opponent and that does not have summoning sickness
• each turn available

Steps

1. Deal combat damage to an opponent using a Rogue
2. Cast Notorious Throng for its prowl cost by paying , causing you to take an extra turn after this one and creating a number of 1/1 Faerie Rogue creature tokens
3. Cast Mystic Retrieval by paying , returning Runic Repetition to your hand from your graveyard
4. Cast Mystic Retrieval from your graveyard for its flashback cost by paying , returning Notorious Throng from your graveyard to your hand and exiling Mystic Retrieval
5. Cast Runic Repetition by paying , returning Mystic Retrieval from exile to your hand
6. Repeat each turn

Results

• Infinite turns
• Instant/Sorcery with "Return Instant/Sorcery from GY to hand"